Check column existence

Using cqlsh, you can either get the description of all columns and their data types, or discover whether a particular column exists in a table by querying the column’s data.

All columns

The CQLSH command DESCRIBE TABLE shows all the table information, including the columns defined. For example, if the cycling.comments table is defined, the following will return the table definition:

DESCRIBE TABLE cycling.comments;

Particular column

If a column exists, a SELECT command will return any data stored in the column:

SELECT * FROM cycling.upcoming_calendar WHERE year = 2015 AND month = 6;

See also:

Was this helpful?

Give Feedback

How can we improve the documentation?

© 2024 DataStax | Privacy policy | Terms of use

Apache, Apache Cassandra, Cassandra, Apache Tomcat, Tomcat, Apache Lucene, Apache Solr, Apache Hadoop, Hadoop, Apache Pulsar, Pulsar, Apache Spark, Spark, Apache TinkerPop, TinkerPop, Apache Kafka and Kafka are either registered trademarks or trademarks of the Apache Software Foundation or its subsidiaries in Canada, the United States and/or other countries. Kubernetes is the registered trademark of the Linux Foundation.

General Inquiries: +1 (650) 389-6000,